<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
<script src="../js/vue.js"></script>
<div id="app">
  <ul>
    <li v-for="item in message">{{item}} </li>
  </ul>
  <ul>
    <li v-for="(item,index) in message">{{index+1}}.{{item}}</li>
  </ul>
</div>

<script>
  const app = new Vue({
    el: '#app',
    data: {
      message: ["hello","world","vue"]
    }
  })
</script>
</body>
</html>